"The Heinz refuge contains Pennsylvania's largest freshwater tidal marsh - a delicate type of ecosystem - although the threat of fossil fuel contamination is nothing new here. In February 2000, a pipeline that runs through the refuge burst, unleashing more than 190,000 gallons of oil, Dr. Stolz said."
Something to bear in mind when the development-minded begin pushing for a pipeline through ANWR.
BTW, animals are being brought to the Tinicum refuge and washed with dish detergent in attempts to save their life. It's worth knowing that Dawn Dishwashing Liquid donates tons of gallons to refuges and other rescue organizations to save the animals victimized by oil spills, and has been doing so for years. For that alone, they deserve your dollars when you next go to the store. In the meantime, people have been asked to report any problems they see:
"The public is asked to report any effect on fish, wildlife or the environment to the U.S. Fish and Wildlife Commission at 215-365-1558."